Re: NSSA NP option bit clarification

[Paul Jakma <[e-mail]>]

On Thu, 12 Jun 2003, Pat Murphy - [phone] wrote:

>       N-bit:  The N-bit describes the the router's NSSA
>               capability.  The N-bit is used only in Hello
>               packets and ensures that all members of an NSSA
>               agree on that area's configuration.
>
> Late in the game of getting RFC 3101 published it stopped being an issue
> with me. I was not around when this text was written this way and can't
> shed any light on the exact intentions of Rob and Vince. My guess is they
> were simply trying to distinguish the use of this bit in the Hello Packet
> versus its use in the Type-7 LSA option field, and that it had nothing at
> all to do with how the bit was used in the DD packet.  I suppose its too
> late now to make this text a little clearer. I do recommend that you don't
> read too much into it.

Yes, its rather unfortunate, as for most other bits you can treat DD
options field as the prime source for neighbour capabilities.
However, N bit leaves it unspecified for DD options it seems, would
have been nice if it had followed E-bit semantics.

> Pat

regards,
--
Paul Jakma      [e-mail]   [e-mail]  Key ID: 64A2FF6A
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